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Black full-copper 360 mm slim radiator with G1/4 ports and 25 mm thickness

Alphacool

Alphacool NexXxoS ST25 Full Copper 360mm Radiator 120mm G1/4 25mm Black 14354

SKU CH-7BFW-3187N

A 360 mm full-copper radiator with 15 FPI fin density and G1/4 threads for compact liquid-cooling loops

  • ColorBlack
  • FeaturesThe ST25 slim radiators offer the ideal liquid cooling solut

Size 360mm

  • Full copper construction for superior heat transfer
  • 400 W/(mK) copper conductivity outperforms aluminium
  • 15 FPI fin density balances airflow and cooling
  • 25mm slim profile fits small form factor builds
  • Includes three screw lengths plus Allen key for easy mounting

Alphacool NexXxoS ST25 360mm Radiator

The Alphacool NexXxoS ST25 is a 360mm slim radiator built entirely from pure copper, including the end chambers, water channels and cooling fins. It targets builders of Mini-PCs and Small Form Factor systems who need full cooling capacity in a restricted 25mm thickness. The G1/4 thread pattern supports standard water-cooling fittings.

Full Copper Construction and Fin Density

Copper provides thermal conductivity of 400 W/(mK) versus 236 W/(mK) for aluminium, and the 15 FPI fin spacing allows air to pass with minimal obstruction while maintaining high cooling capacity. The box includes 12 each of M3x30mm, M3x5mm and M3x35mm screws plus an Allen key and mounting instructions, covering a wide range of fan and case thicknesses without extra purchases.

Suits SFF Builds Needing Maximum Density

This radiator suits enthusiasts assembling compact custom loops where every millimetre counts and copper performance is preferred. Builders requiring thicker radiators for higher absolute heat rejection, or those planning systems that cannot accommodate a 360mm length, should consider other form factors.

Highlights

  • Full copper construction for superior heat transfer
  • 400 W/(mK) copper conductivity outperforms aluminium
  • 15 FPI fin density balances airflow and cooling
  • 25mm slim profile fits small form factor builds
  • Includes three screw lengths plus Allen key for easy mounting

Specifications

BrandAlphacool
Model1019153
Part Number1019153
ColorBlack
FeaturesThe ST25 slim radiators offer the ideal liquid cooling solution for Mini-PCs or SSF (Small Form Factor) systems.

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Questions about this item

Will the copper fins or end chambers corrode and need replacement?

Pure copper construction resists corrosion better than mixed-metal radiators; with proper coolant and biocide no scheduled fin or chamber replacement is needed.

Does the 15 FPI fin density restrict airflow with low-static-pressure fans?

The 15 FPI spacing is designed for low-restriction airflow, so even fans with modest static pressure can move air through the 360 mm core without choking.

How hot does the 25 mm thick all-copper core get during continuous load?

Copper’s 400 W/(m·K) conductivity spreads heat quickly across the 360 mm length, keeping surface temperatures lower than aluminium equivalents under the same sustained load.

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